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A data bus transmission apparatus

A technology of transmission equipment and data bus, which is applied in the direction of transmission system, bus network, data exchange through path configuration, etc., to achieve the effect of improving reliability and great application value

Inactive Publication Date: 2005-04-06
CENT FOR SPACE SCI & APPLIED RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is a major obstacle in the current application of IEEE-1394 high-speed data bus to the measurement and control environment with high reliability data transmission requirements

Method used

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  • A data bus transmission apparatus
  • A data bus transmission apparatus
  • A data bus transmission apparatus

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Embodiment Construction

[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0013] refer to figure 1 The high-reliability and high-speed IEEE-1394 data transmission equipment with dual redundant bus includes two 1394 physical layer chips 1 and 2. Here, the physical layer chip of model TSB41LV04A can be selected. The physical layer chips 1 and 2 are electrically connected to the external bus cable (not shown) of the device through the sending / receiving channel (not shown), so as to handle the transmission and reception of data and ensure that the device can normally access the bus, which effectively provides Dual redundant bus connections for IEEE-1394 data transfer devices. Each PHY chip can have multiple transmit / receive channels.

[0014] The device also includes a 1394 link layer chip, which provides data packet reception confirmation, addressing, data verification, and data framing, etc. Here, the 1394 ...

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Abstract

This invention discloses a data bus transmission device, which comprises at least two single IEEE-1394 physical layer chips and one IEEE-1394 link layer chip. The said physical layer chips are separately connected with link layer chip and are located with path switch in its link path. It also comprises a path switch control apparatus connected with all path switches with one conducting at one time controlling path switch.

Description

technical field [0001] The invention relates to a data bus transmission device, more specifically, relates to a transmission device using IEEE-1394 data bus for high-reliability data transmission. Background technique [0002] The IEEE-1394 high-speed serial bus (abbreviated as 1394) standard originated from the high-speed serial bus standard named "Firewire" of Apple Computer. In December 1995, the IEEE-1394-1995 high-speed serial bus standard was adopted and approved by the IEEE Standards Committee. In order to further improve and improve the working performance of the bus and make the interconnection of devices between the buses more perfect and ideal, the IEEE Standard Committee supplemented the 1394 bus standard protocol. This supplementary protocol was approved in March 2000 and was named IEEE- 1394a-2000 High-speed serial bus standard. The content involved includes: improving bandwidth utilization, bus reset, power management, etc. With the continuous development o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/40H04L29/02
Inventor 李慧军惠平曹松陈小敏孙辉先
Owner CENT FOR SPACE SCI & APPLIED RES